Abstract
Harn and Lin proposed in 2010 a secret sharing-based group key transfer protocol. One year later, Nam et al. showed their construction is vulnerable to a replay attack and proposed a way to fix it. Recently, Yuan et al. analyzed the same protocol, proved that it is also vulnerable to a man-in-the middle attack and considered a countermeasure. First, we slightly modify Yuan et al.’s attack to make it simpler to implement and harder to be detected. Second, we show that the improved version of the protocol remains susceptible to a man-in-the-middle attack.
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Acknowledgments
This work was supported by the strategic grant POSDRU/159/1.5/S/137750, Project Doctoral and Postdoctoral programs support for increased competitiveness in Exact Sciences research cofinanced by the European Social Found within the Sectorial Operational Program Human Resources Development 2007–2013.
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Olimid, R.F. (2015). On the (Non)Improvement of an Authenticated GKT Protocol. In: Herrero, Á., Baruque, B., Sedano, J., Quintián, H., Corchado, E. (eds) International Joint Conference. CISIS 2015. Advances in Intelligent Systems and Computing, vol 369. Springer, Cham. https://doi.org/10.1007/978-3-319-19713-5_11
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DOI: https://doi.org/10.1007/978-3-319-19713-5_11
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